Drawing vector images on PDF with PDFBox

Question

I would like to draw a vector image on a PDF with Apache PDFBox.

This is the code I use to draw regular images

PDPage page = (PDPage) document.getDocumen         


        

Answer 1

The final working solution for me that loads an SVG file and overlays it on a PDF file (this renders the SVG in a 500x500 box at (0,0) coordinate which is bottom left of the PDF document):

package com.example.svgadder;

import java.io.*;
import java.nio.*;

import org.apache.pdfbox.pdmodel.*;
import org.apache.pdfbox.pdmodel.PDPageContentStream.AppendMode;
import org.apache.pdfbox.pdmodel.graphics.form.PDFormXObject;

import de.rototor.pdfbox.graphics2d.PdfBoxGraphics2D;

import java.awt.geom.AffineTransform;

import com.kitfox.svg.SVGDiagram;
import com.kitfox.svg.SVGException;
import com.kitfox.svg.SVGUniverse;

public class App 
{
    public static void main( String[] args ) throws Exception {
        
        App app = new App();

    }

    public App() throws Exception {
        
        // loading PDF and SVG files

        File pdfFile = new File("input.pdf");
        File svgFile = new File("input.svg");

        PDDocument doc = PDDocument.load(pdfFile);
        PDPage page = doc.getPage(0);

        SVGUniverse svgUniverse = new SVGUniverse();
        SVGDiagram diagram = svgUniverse.getDiagram(svgUniverse.loadSVG(f.toURL()));
        
        PdfBoxGraphics2D graphics = new PdfBoxGraphics2D(doc, 500, 500);

        try {
            diagram.render(graphics);
        } finally {
            graphics.dispose();
        }

        PDFormXObject xform = graphics.getXFormObject();

        try (PDPageContentStream contentWriter = new PDPageContentStream(doc, page, AppendMode.APPEND, false)) {

            AffineTransform transform = AffineTransform.getTranslateInstance(0, 0);
            xform.setMatrix(transform);
            contentWriter.drawForm(xform);
        }

        doc.save("res.pdf");
        doc.close();
    }
}

Please use svgSalamander from here: https://github.com/mgarin/svgSalamander

Please use what Coemgenus suggested for scaling your final overlaid SVG. I tried the 2nd option and it works well.

Nirmal